NITRIC
Set to 2 different clues across 6 published puzzles, most often “Kind of acid” — The New York Times, Tuesday, 19 July 2011.
6 letters
Every clue on record, most used first
- Kind of acid5 times
The New York Times — Tuesday, 19 July 2011
- ___ acidonce
The New York Times — Friday, 27 February 2004